Questions Asked on
May 25, 2010

geometry
How do I find the surface area of a sphere with a radius of 8cm?
asked by billy 
statistics
if Z is a standard normal variable, find the probability. the probability that z lies between 2.41 and 0
asked by shasha 
physics  leg cast
The leg and cast in the figure below weigh 280 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 105 N. Determine the weight w2 and the angle α needed so that no force is exerted on the hip joint by the
asked by lau 
Chemistry
Is Glucose soluble in HCl, NaOH and NaHCO3 because it's soluble in water?  I put soluble for all because it dissolves in water. Is ptoluidine soluble in HCl, NaOH, and NaHCO3? I put soluble in HCl, insoluble in NaOH and insoluble in NaHCO3. Is benzoic
asked by Alex 
Corporate Finance
Electronic Timing Inc (ETI) is a small company founded 15 years ago by electronic engineers Tom Miller and Jessica Kerr. EIT manufactures integrated circuits to capitalize on the complex nixedsignal design technology and has recently entered the market
asked by Khulood 
Physics
A skier of mass 64 kg starts from rest at the top of an 18° slope, points her skis straight down the slope and lets gravity pull her down the slope. The slope is 65 m long. Her speed at the bottom is 15 m/s. (a) Assuming zero air resistance, what is the
asked by MD 
algebra 2
find the sum of the first 24 terms of the arithmetic sequence, if the first term is 3 and the commom difference is 3.
asked by Anonymous 
Math
What is the product of a multiplication sentence?
asked by Dominic 
chemistry
How are the formation of aqueous solutions of sodium chloride and sucrose similar?
asked by Jennie 
Physics
What causes the restoring force in a simple pendulum? A. friction between the thread and the support B. the force exerted on the pendulum bob while displacing it from the mean position C. the component of the weight of the bob acting perpendicular to the
asked by Rachel 
Health
what are the disadvantages of using master patient indexs(MPI)? both manual MPI and automated MPI
asked by Anonymous 
Honors Chemistry
If the percent (mass/mass) for a solute is 20% and the mass of the solution is 300 g, what is the mass of the solute in solution?
asked by Emily 
English
Give four characteristics of standard English.
asked by Betty 
algebra 2
you own 9 sweaters and are taking 3 on vacation. In how many ways can you choose 3 sweaters from the 9?
asked by Anonymous 
Math Analysis
Can someone help me with this problem, please? Thanks!! "A ship leaves port and sails for 2 hours northeast and then 3 hours northwest. If the speed remains constant, what course should the ship take home?"
asked by Emily 
Chemistry
I have a balloon that contains 22 grams of Carbon dioxide. The barometric pressure is 1019 millibars which I converted to 1.006 Atm and the temperature is 299 "K". What is the volume of balloon? I used the ideal gas law to find out the volume in liters of
asked by JamieLyn 
English
In Romeo and Juliet, why did Romeo choose poison instead of a dagger on himself when he found out that Juilet was "dead"? I can figure out that money was what poisoned the Capulets and Montagues. So he would like to buy poison from the apothecary even if
asked by Kendry 
Algebra 2
solve one ninth = 27^3x5.
asked by Maria 
English
How ofen do you read the newspaper? I read it every day. (Does the answer mean 'I read the same newspaper every day,' or 'I read a newspaper every day.' Was 'the newspaper' writen in generic use or not?)
asked by rfvv 
biology
how is emigration and immigration not important factors when studying global human population growth?
asked by kc 
Chem
Can someone explain how to do this problem? For the equilibrium reation below, 288g of liquid water and 448 g of carbon monoxide are placed in an 8.00 liter container and heated to 900 K. If the value of K_c for the reaction at 900 K is 1.56, what are the
asked by Anonymous 
Math
Can scalene triangles ever be similar?
asked by Hannah 
college chemistry
How much heat is needed to convert 2.00 kg of liquid ammonia at 40.0 oC to its vapor at 11.0 oC? The specific heat of liquid ammonia, NH3 (l), is 4.70 J/gK and that of the vapor NH3 (g), is 2.20 J/gK. The enthalpy of vaporization of ammonia is 23.3
asked by pamela 
math
EF is a median of isosceles trapezoid ABCD. Find EF if AB is equal to 3 inches, and CD is equal to 11 inches.
asked by sylvia 
reading
in the story the dog of Pompeii. The questions says the author muses that tito becomes a famous friend to and healer of animals. How is that idea an extension of the storys theme?
asked by hunter 
Math
How do i solve this system algebraicly? 3x + 8y = 16 5x + 10y = 25
asked by Chris 
science
whatis the mass of a electromanetic roller coaster?the weight?
asked by brittney 
Algebra II
An investment service promises to triple your money in 12 years. Assuming continuous compounding of interest, what rate of interest is needed? For the question is it asking me if simple interest or continuously compounded interest is needed? Or Is it
asked by Anonymous 
math
The length of a rectangle is 7 cm more than its width. The area of the rectangle is 120 sq. cm. What is the width of the rectangle?
asked by CB 
geometry
if the measure of one angle of an isosceles triangle is 92 degrees. what is the measure of either of remaining angles
asked by chantel 
Chem Help
What is the heat of reaction when 4 moles of carbon monnozide are buened in oxygen?
asked by Anonymous 
Calculus
Resolve the vector v=[7,9] into rectangular components, one of which is in the direction of u=[6,2].
asked by Ariza 
economics
When the market price is above equilibrium price, the market price will be drive
asked by Anonymous 
Chem
Is sodium benzoate soluble in HCl? I put yes What about NaOH? It's supposed to be created from a reaction with benzoic acid and NaOH What about NaHCO3? And aq. sodium benzoate plus HCl? And aq. sodium benzoate plus NaOH?
asked by Alex 
Algebra 2
Susan keeps track of the number of tickets sold for each play presented at The Community Theater. Within how many standard deviations of the mean do all the values fall? 137, 134, 91, 61, 150, 155, 110, 148, 90, 169, 67, 61 * 5 * 4 * 2 * 3
asked by Skye 
Chemistry
Describe how you would prepare 500 mL of a 0.0400 M solution of HCI from a concentrated soultion of HCI which is 36.5% HCI and has a density of 1.10 g/mL.
asked by Lu 
algebra
I just need to know if my work is correct. I am working in Excel and I need to find the formula for the expense Wages. I am not sure if wages consists of the gross pay or the net pay. Does anyone have any suggestions what it might be? I was thinking it
asked by Excel 
Chemistry
What is the pH of a 2.62 x 10^1 HCN solution? The pKa for HCN = 9.212 I don't know whether to use the Henderson Hasselbalch Equation or just convert pKa to Ka and work it out that way.
asked by Michael 
English
We sat _________ the campfire. (Would you let me know suitable expressions for the blank?)
asked by rfvv 
algebra
42y=7y+13 then y =?
asked by Randy Jackson 
ART  Carmen
About the thimble you described, please look at the maker's mark on the right: http://home.comcast.net/~brl/thimbles/stern.jpg Sra
asked by SraJMcGin 
ART
I have a 14k thimble with a SC mark inside a rectangle and a anchor next to it. Does anybody knows about this markings? I'll appreciate if you give me some info. Thank you.
asked by CARMEN 
high school
How did the defeat of the spanish armada by england in 1588 enable other european nations to build their new empires in the new world?
asked by tj 
Math
FiberType HighCalorie LowCalori Totals High Fiber 18 4 22 Medium Fiber 23 6 29 Low Fiber 12 21 33 Totals 53 31 84 3. What is the probability that a cereal would both high calorie and high fiber? In other words, what is P(high calorie and high fiber)? 4.
asked by Molly 
Science
Winds in the Northern Hemisphere curve to the right and winds in the Southern Hemisphere curve to the left. This is known as the a. Jet Stream b. Wind c. Weather Pattern d. Coriolis Effect
asked by TREVOR 
math
How do I do this 4x +3= 2x+11
asked by hannah 
math
Write a word using capital letters. Your word needs to have 5 acute,2obtuse, and 5 right angles
asked by AIDEN 
math
A certain number changes from 200 to 900 within three hours find the vaulue of k using the formula n times e raised to k times t
asked by Jason 
algebra
x/21/3=5
asked by Anonymous 
chemistry
identify the oxidizing agent and the reducing agent in the following reaction: C + 2Clsub2 > CClsub4
asked by amy 
MGT/216
I need a historical example of an ethical dilemma that deals with global business. All examples appreciated!?
asked by Sam 
geography
Where areas are heavily populated around the world and why? can you help me please? thank you
asked by natalie 
algebra 2
a rectangle has an area of ( x3+x210x+8) square meters, and a width of (x+4) meters. Find its length.
asked by Anonymous 
Chemistry
I have no idea what to do here.... What is the pH for the solution made from 11.10 mL of 0.2780 M NaOH solution mixed with 70.20 mL of 0.1300 M ammonium chloride solution? Note that the pKa for NH4+ is 9.241
asked by Michael 
Math
Given the functions f and g below, what is (f o g)(11)? f(x) = x − 20 g(x) = (x − 3)2
asked by Thomas 
math
500 acres of land costs 800 dollars and every year there is a three percent increase in price then it gives the end cost was one thousand. it asks for the equation using v=p(1+r) raised to the n power
asked by Jason 
WRITING
Some say that texting on a cell phone is a bad thing for students focus, but their is a simple thing we can do is by having the teachers go around the classroom to see if students are texting. how can i fix this runon sentence
asked by LAUREN 
math
a train is moving at 40km/hr and rain is falling at 10km/hr find velocity of rain relative to train
asked by ahmed 
mat/116
4 3y>11
asked by laure 
8th grade Composition
Identify parts of Speech for sentence below, on numbered word: 1 2 3 Before the eruption, Mount St.Helena was 4 like a giant pressure cooker.
asked by Matthew 
Micro Economics
Externalities are third party consequence of some other action. They can be positive or negative externalities and they impose a benefit or cost to a third party. Identify a positive and a negative externality. Discuss the benefits and costs associated
asked by Ashley 
Chemistry
If you have 100 L of methane gas how many liters of carbon dioxide can you produce when you burn the gas?
asked by Kayla 
finance
Kim and Dan Bergholt are both government workers. They are considering purchasing a home in the Washington D.C. area for about $280,000. They estimate monthly expenses for utilities at $220, maintenance at $100, property taxes at $380, and home insurance
asked by mee 
tci college
A brick undergoes a free fall from rest. Its initial height is 125 m above the ground. How long does it take to hit the ground? What is its maximum velocity before it makes impact? For ease of calculations, the magnitude of the acceleration of gravity is
asked by tommy smith 
algebra
Radical and Rational Exponent find roots square roots of 12a^3/25=6a^3 3square roots 18/6=1 check this for me it find the roots of the problem.
asked by JohnJ 
algebra
Radical and Rational Exponent find roots square roots of 12a^3/25=6a^3 3square roots 18/6=1 check this for me it find the roots of the problem.
asked by JohnJ 
English
Can you help me check these sentences, please? Thank you very much in advance. 1) The new factor in the Canterbury Tales is that there is individualization (?) . THe character exists because he has reactions and is in movement. 2) His individualization (?)
asked by Franco 
math
write a number pattern for 8 starfish if each of them have 5 arms.
asked by eric 
college
In 1990, the life expectancy of males in a certain country was 62.1 years, it was 65.3 years. Let E represent life expectancy in year T and let t represent the number of years since 1990.
asked by Jesse 
carpentry
if the radious of the circle 14 feet 7 inches and the height 22 ft 4 in what the voulme of 72 arc
asked by avery brown 
math word problem
I have no clue as to how to tackle this problem. Two standard sixsided dice are rolled. The product of their outcomes is computed. Which of the following numbers is most likely to occur? 4 6 7 8
asked by M.A. 
English
how many different ways can a play be staged?
asked by Anonymous 
Computer Science
What do you understand by life cycle of software development? Explain briefly the various stages of software development lifecycle.
asked by Vince 
math
In 1990, the life expectancy of males in a certain country was 62.1 years, it was 65.3 years. Let E represent life expectancy in year T and let t represent the number of years since 1990. E(t)= [ ]t+[] use the function to predict the life expectancy of
asked by Jesse 
Computer Science
What do you understand by life cycle of software development? Explain briefly the various stages of software development lifecycle.
asked by Vince 
english
why is is "better late than never," rather than "better late then never?"
asked by lena 
Computer Science
What do you understand by life cycle of software development? Explain briefly the various stages of software development lifecycle.
asked by Vince 
Math
The probability that a school bus is late is 0.04. How many times would you expect the bus to be late in a 5week period?
asked by Thomas 
Masters level finance
I am having a problem figuring out this problem. I understand the concept of depreciation and it occurs on non cash items over a period of time. However, there are no cash items to depreciate in this problem. Given the following information for O'Hara
asked by Candis 
math
Given the midpoint (8,14) and endpoint (9,1), find the other endpoint
asked by ann 
Cost Accounting
What are the differences between a direct cost and an indirect cost? Which is the more difficult cost to track? Why? How do indirect costs affect the cost of a product? Should indirect costs be included in product cost? Why or why not?
asked by Angie 
Cost Accounting
What are the differences between jobcost and processcost systems? When would it be appropriate to use each type of system? How does each system affect the cost of a product?
asked by Angie 
Chemistry
Approximately 1.5 103 g of iron(II) hydroxide, Fe(OH)2(s) dissolves per liter of water at 18°C. Calculate Ksp for Fe(OH)2(s) at this temperature. This is what I've done: 1.5x10^3 g Fe(OH)2/L x 1mol Fe(OH)2/89.863g Fe(OH)2 = 1.669x10^5 M Fe(OH)2 Fe(OH)2
asked by Jakob 
math URGENT PLEASE HELP
can you please explain this question to me for part b i get t=0.7 by trial and error and 0.6 percent of the population but im sure theres a more exact way to do it (a) A chemical process produces NaCI at the rate 3.Jtgrams per minute. (i) What is the rate
asked by jessie 
East hem.
When did Rome become a republic?
asked by Cristina 
college algebra
3y^2+8=0 (3y+2)+(3y2)=8+0 3y=8 y=3/8 Radical and Rational Exponent this chapter is hard for me.
asked by JohnJ 
poetry
i need help on thinking of a acrostic poem for DOLPHIN.
asked by maddie 
science
what is an element, a compound and a mixture ?
asked by shahana 
College Chemistry
For my homework I got this problem that my professor never went over in class how to do it and I don't know how to interpret it. A chemist runs a second order reaction of A>B starting at 10mili moles/L concentration of A (and no B). After one hour the
asked by Michelle 
English
Thank you very much for your help. I still have problems with a few sentence. I hope you can have a look at them too. 1)Can't I switch from the present to the past if I want to refer to a historical event? 2) Do not use contracter forms when writing your
asked by Franco 
chemistry
what is the sorce of van der waals forces?
asked by chicken littell 
Math
Restriction on variable in a denominator If the expression  9t+1/ 5t +7
asked by Anonymous 
chemistry
Why must a balanced chemical equation be used when determining Keq?
asked by sara johnson 
reading
the story the dog pompeii the author uses much of the story to describe the wealth and beauty of Pompeii. the story ends with scientists amazed at finding an ordinary dog with a raisin cake. How do these two different story elements relate to the theme?
asked by hunter 
college algebra
Radical and Rational Exponent find roots square roots of 12a^3/25=6a^3 3square roots 18/6=1 this is my answer am I right. check this for me it find the roots of the problem
asked by JohnJ 
Math
Which of the following is an example of a ratio? number of dogs who like Good boy treats number of chocalates per bag number of people who like math all of the above Please help
asked by Anne 
algebra
3square root 18 over6= 1 Radical and Rational exponent check this for me please see if it right.
asked by Elaine 
9th grade
y=62x 7xy=3
asked by trey 
science
How can an animals structure help survive in different environments? give three examples
asked by bob 
math
square root of x+42square x1=1 could help me please.
asked by Gregory 
Macro economics
1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of
asked by Sue 
english
how do i express sighing by using punctuations instead of using the word "sigh", or is there any other way to do it beside punctuation
asked by flame 
economics
1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of
asked by Sue 
physics
You are pushing a 55 N lawnmower across the the yard. Its handle makes a 55 degree angle with the ground. What force are you exerting on the handle?
asked by Jesse 
chemistry!
an aqueous solution of calcium chloride boils at 101.3 degrees Celsius. How many kilograms of calcium chloride were dissolved in 1000.0 g of the solvent??
asked by Ana 
math
Shantel and Kwamie are planning to buy their first home
asked by kdshakjah 
math
how do you solve these 1. 7d2+5=20 2. 4x10x=28 3. 4x10x+28 4. 8y3y+6= 10 5. 9+4w6=12 6. 9w+46=12 7.18m6m=16 8. 6rr13=18
asked by Sara! 
math
Given the functions f and g below, what is (f o g)(11)? f(x) = x − 20 g(x) = (x − 3)2
asked by CB 
math
Two cards are randomly drawn from a standard deck without replacing the card after the first draw. Find the probability of drawing a spade followed by a heart. Please type your answer as a fraction. Do not forget to reduce if needed!
asked by CB 
geography / 8 grade
Recentely, Russian troops fought which rebellions ethnic group ? The soviet Union . correct?
asked by natalie 
chemistry
What effect does bending, stress, or machining have on the tendency of iron to corrode?
asked by chase 
chemistry
How does (a) copper and (b) zinc affect the corrosion rate of iron? How could this knowledge about iron and corrosion help you as a consumer or home owner?
asked by chase 
Math
Paul is 12. His father is 33. How many years ago was the father 4 times as old as the son?
asked by Zak 
science
s it possible for seismologist to know for sure that an earthquake or volcanic eruption will not occur in a particular area? And why
asked by Rachel 
Vectors
Could you please help me solve this question: Solve this system of equations using elementary operations. 1. x/3 + y/4 + z/5 =14 2. x/4 + y/5 + z/3 =21 3. x/5 + y/3 + z/4 =7 So far, I have multiplied all three equations by 60, to turn them into whole
asked by Darren 
chemistry
What is the concentration of OH– ions formed when 40.0 g of NaOH is dissolved in 250 mL H2O?
asked by anonymous 
criminal law/ college
I need to identify the bail sytem beneficiaries and what are some recommendations for the future of the bail system
asked by nette28 
physics
for both of these object system1: earth and ball if a ball is falling down, is the work done on it positive since force and displacement are in the same direction. system 2: earth and basket a basket is tied to a rope and is dropped then come to a full
asked by eng 
Math
Given A=(1/2)(h)(a+b) Find: a. A if h=25, a=15, b=42 b. h if A=260, a=8, b=5 c. a if A=322, h=14, b=15 d. b if A=448, h=16, a=25 This makes no sense to me whatsoever. Please clarify as to what I'm supposed to do? Thank you very much!
asked by John 
chemistry
how many liters of hydrogen gas measured at 1.05 atm and negative 25 degrees will be produced when 5.00 grams of magnesium metal is dropped into excess hydrochloric acid?
asked by sss 
chem
Calculate the boiling point elevation of a solution containing 50.0 g of glucose dissolved in 500.0 g of water? We just started learning about this and i don't get it!
asked by jess 
economic
1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of
asked by Sue 
math
1.15j10+8=11 2. 18m6m=16 3.18m6m1=16
asked by Sara! 
chemistry
what volume of O2 at STP is needed to react with 4.52 g of K
asked by chris 
algebra 2
Mildred sold magazine subscriptions with three prices: $22, $18, and $15. She sold 2 fewer of the $22 subscriptions than of the $18 subscriptions and sold a total of 33 subscriptions. If her total sales amounted to $591, how many $15 subscriptions did
asked by Anonymous 
world history
what nation became an imperial power in east asia
asked by amy 
economics
1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of
asked by sue 
Math
solve this system algebraicly a 2/3b =4 3/5a +b=15
asked by kyle 
algebra 2
Graph f(x)= 1/5x+3.
asked by Anonymous 
writing skills 1
what is the name of the common error in the sentences
asked by derek 
math
are my answers right 1.8y36=10 x=1 5/8 2. 7d2+5=20 d=2 3/7
asked by Sara! 
physics
if a piston is insulated and being pushed, is the temperature increased
asked by bme1 
algebra
square roots 12a^3/25 equal what it radical and rational exponent
asked by Gregory 
chemistry
what is the molarity of a solution, if 12.0 g of KCl is dissolved into 500mL of H20
asked by Anonymous 
physics
if the system is a basket, the basket is tied to a rope and it is stopped by a fixed clamp when it is falling down, I know there is initial KE but how come initial work is negative. Isnt force and displacement are in the same direction, so work should be
asked by eng 
math
can you please explain this question to me for part b i get t=0.7 by trial and error and 86 percent of the population but im sure theres a more exact way to do it (a) A chemical process produces NaCI at the rate 3t^1/2 grams per minute. (i) What is the
asked by jessie urgent please 
To Ms. Sue
Ms. Sue this is the AZ story which I have been working on a few days ago. Finally it has been completed, and I would like you to edit it for me. I think that I have started it out well, but my ending bits are weird. I'll appreciate all the help you could
asked by Sara 
physics(check my answers)
in a piston is locked in place and the cylinder is placed in a boiling water, the temperature, pressure, internal energy are all increase if a piston is being pushed inward, would it have the same answer as above
asked by bme1 
English
why does Harper Lee use humorous tone in to kill a mokingbird
asked by Margarett 
History
 The ways in which states around the globe have related to each other during various periods and the issues that have shaped their interactions. I need 4 specific events, at t 1 of which must come from the period prior to 1700, t one must come from
asked by S 
Science
What is the pH of a 2.62 x 10^2 M HBr solution? thanks
asked by Andy 
algebra 2
Eleven people are entered in a race. If there are no ties, in how many ways can the first two places come out?
asked by Anonymous 
consumer math
Tina earns $14,500 per year. If she has 20% withheld for deductions, what is the net amount of her biweekly paycheck? a. $2,900 b. $669.23 c. $111.54 d. $446.15
asked by peaches 
Math
Unscramble A N I L T O R V P S R P I N R O O T O G I F L A O T R N L O N V I G S E I C N A T S D
asked by Cindy 
algebra 2
Write a polynomial function that has the zeros 2, 2, and 1 and has a leading coefficient of 1. Then graph the function to show that 2, 2, and 1 are solutions.
asked by danni 
Alg: Please Help
Mr. and Mrs. Sawyer bought a condonminium for $75,000. Assuming that it value will appreciate 6% a year, how much will the condo be worth iin five years when the Sawyers are ready to move? Steps please.
asked by Anonymous 
Calculus
A force of 70 N acts at an angle of 40 degrees to the horizontal and a force of 125 N acts at an angle of 65 degrees to the horizontal. Calculate the magnitude and direction of the resultant and the equilibrant.
asked by Anonymous 
Math
A rectangle has one side of 3 feet and a diagonal of 3.28 ft. What is the area of the rectangle? No Pythagorean Theorem.
asked by Ron 
stats. plz help i have exams in two days!
find the indicated prob.: the amount of snowfall falling in a certain mountain range is normally distributed with a mean of 86 inches, and a standard deviation of 12 inches. what is the probability that the mean annual snowfall during 36 randomly picked
asked by shasha 
macroeconomics
When the market price is above equilibrium price, the market price will be drive
asked by Anonymous 
PreAlgebra
what is the solution for this problem? 1 + 1/1+ 1/x1/1/1 – 1/x+1
asked by Ike 
stats
a study of the amount of time it takes a mechanic to rebuild the transmission of a 1992 chevrolet cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. if 40 mechanics are randomly selected, find the probability that their mean
asked by shasha 
chemistry
Under what conditions might a chemist describe a solution in terms of molality? Why??
asked by lola 
economics
When demand falls and supply remains the same, equilibrium price _______ and equilibrium quantity ________. A) falls, falls B) rises, rises C) falls, rises D) rises, falls
asked by Anonymous 
Alg
AM frequencies of radio transmissions range from 5351705 kilohertz. Assume they are an exponential function. Write an equation for the AM frequencies along a display that is 15 cm long.
asked by Anonymous 
Math please plaese helpppp
how do you solve this system algebraicly a 2/3b =4 3/5a +b=15
asked by kyle 
math
what is a polynomial with a single root at x=5 and a triple root at x=3
asked by alex 
algebra 2
A rental car agency charges $13 per day plus 12 cents per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. How many miles per day will have to be driven for the cost of a car form the second agency?
asked by Anonymous 
biology
A rare allele may become common in the gene pool of a small population after only a few generations by the process of________________.?
asked by Taylor PLEASE URGENT!!! 
math
$2700 at 9% interest compounded quarterlyfor 4 years
asked by brittany 
chemistry
Why are the published values of the boiling points of substances always taken at 1 atm?
asked by Ariana 
Math
4y^2y^2/y2x x^24/X^2+3x+2 could someone help me. Please I must turn this in tongiht.
asked by JohnJ 
math
4y^2y^2/y2x
asked by JohnJ 
chemistry
under water where the temperature is 17c and the pressure is 394kpa,a diver inhales 1L of air from his scuba tank how many moles of gas are in his lungs?
asked by john 
Calculus
A box is dragged with a force of 115 N up a ramp a distance of 3 m. If the force makes an angle of 35 degrees with the ramp and the ramp makes an angle of 20 degrees with the ground, how much work is done?
asked by Anonymous 
Physics
What is the acceleration of the upper block? The coefficient of kinetic friction between the lower block and upper block is 0.0005. The coefficient of kinetic friction between lower block and floor is 0.0001. Upper block is 1kg, lower block is 2kg, and
asked by Doug 
PHYSICS
A train starts from rest and accelerates uniformly, until it has traveled 3 km and acquired a velocity of 20 m/s The train then moves at a constant velocity of 20 for 400 s. The train then slows down uniformly at 0.065 m/s2 until it is brought to a halt.
asked by CHLOE 
chemistry
Why are the published values of the boiling points of substances always taken at 1 atm?
asked by Ariana 
MATH ANALYSIS
How do you simplify these questions?: 1. cos^2(x/2)sin^2(x/2) 2. 2cos^2(3A)1 3. sin 2x/1+cos2x I think number 3 is tan 2x? The other two I don't know. Thanks for the help
asked by anonymous 
College Chemistry
For my homework I got this problem that my professor never went over in class how to do it and I don't know how to interpret it. A chemist runs a second order reaction of A>B starting at 10mili moles/L concentration of A (and no B). After one hour the
asked by Sarah 
Algebra 2
solve x squared  10x+29=0
asked by Danielle 
chem help!!
What effect does bending, stress, or machining have on the tendency of iron to corrode?
asked by lauren